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MR Pumps

MR Liquid-Ring
Pump Overview

The Alfa Laval MR is a well-proven liquid-ring pump specifically designed for effective pumping of liquids containing air or gas. 

The pump is for use in food, chemical, pharmaceutical and similar industries, and its construction makes it ideal for use in CIP-return applications.

MR Pump
Centrigual Pump benefits

Alfa Laval MR Liquid-Ring
Centrifugal Pump Benefits

The Alfa Laval MR pump is specifically designed for pumping liquids that contain air or gas and is most commonly used for CIP return applications across the food, dairy, beverage and pharmaceutical industries.

MR Liquid-Ring Pump Technical Data

Materials

All product wetted parts, i.e. pump casing, casing cover and impeller are made of acid-resistant steel AISI 316L
Seals are made of EPDM rubber
Cap nuts, legs, leg brackets, adaptor and shroud are made of stainless steel
The shroud has noise absorbing lining inside

Motor

Standard foot-flanged motor acc. to IEC metric standard 4 pol = 1500/1800 rpm. at 50/60 Hz. IP55 (with drain holes with labyrinth plug), insulation class F.

Motor Sizes

MR-185S
50Hz: 5.5, 7.5 kW
60Hz: 4.5, 7.5 kW

MR-200S
50Hz: 5.5, 7.5, 11 kW
60Hz: 7.5, 11 kW

MR-300
50Hz: 15, 18.5, 22 kW
60Hz: 15, 16.5, 22 kW

MR Pump Brochure

Download the Full
Specification Sheet

How the MR Liquid-Ring Pump Works

The Alfa Laval MR Pump uses centrifugal force to operate, but instead of directing fluid into a ring or volute-type casing around the periphery, the pump instead transfers it into channels on either side of the impeller, in the front plate and back plate of the pump. 

These channels increase in volume as the impeller passes the suction port, creating a vacuum and drawing in liquid. The volume reduces again at the discharge port, creating pressure and forcing the liquid out

Pump Range
MR Pump






The MR pump is available in three sizes to handle capacities up to 80 m3/h and differential pressures up to 5 bar at 50Hz.

Standard Design
2 Unique Impeller Design
The MR Liquid-Ring Pump consists of pump casing, casing cover and impeller made of acid-resistant, duplex-grade steel; EPDM, FPM or NBR elastomers; stainless steel cap nuts, legs, leg brackets, and adapter; and, stainless steel shroud with noise-absorbing interior lining protecting the motor. All models have an external mechanical single seal.

MR Liquid-Ring Pump Product Documents

MR Liquid-Ring Pump
Pump Product Leaflet

Datasheet
Instruction

MR Liquid-Ring Pump
Pump Instruction Manual

Recent Success Story

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Energy-efficient pumps cut this Danish dairy’s energy consumption by 20% while improving uptime and reducing emissions.

Extend the performance of your Pumps

MR Liquid-Ring Pump
Servicing & Maintenance

Our dedicated servicing and maintenance team can provide the parts and expertise you need to ensure uptime and maximise operational efficiency.

The MR Liquid-Ring pump is designed for a wide range of duties across the Dairy, Food, Beverage, Personal Care, Biotechnology and Pharmaceutical Industries.

Related Industries

The MR centrifugal pump is a reliable CIP return pump for applications where air is present, ensuring efficient cleaning and maintaining hygiene standards in beverage processing.

The MR centrifugal pump handles CIP return duties even when air is present, providing consistent and effective cleaning to support hygienic food production.

The MR centrifugal pump ensures efficient CIP return in dairy applications, effectively handling air in the system while maintaining cleanliness and process reliability.

Enquire About MR Pumps

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